Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12216418 | Powder conveyance device and image forming apparatus including a conveyor and first and second conveyance tubes | Kei Saito | 2025-02-04 |
| 11726418 | Developer container, developing device, process cartridge, and image forming apparatus | Kei Saito, Kentarou Matsumoto, Kunihiro Ohyama | 2023-08-15 |
| 11454897 | Developing device and image forming apparatus containing regulated bearing | Kei Saito, Kunihiro Ohyama, Kentarou Matsumoto | 2022-09-27 |
| 11366410 | Developer container, developing device, process cartridge, and image forming apparatus | Kei Saito, Kentarou Matsumoto, Kunihiro Ohyama | 2022-06-21 |
| 11275325 | Image forming apparatus including a process cartridge that includes a developing device | Hotaru HASHIKAWA, Yoshihiro Fujiwara, Nobuo Takami, Ryusuke Mase, Kazuki Yogosawa +2 more | 2022-03-15 |
| 11256194 | Developing device, process cartridge, and image forming apparatus | Yuuki Tsuchiya, Yoshihiro Fujiwara, Yuki Oshikawa, Ryusuke Mase, Hotaru HASHIKAWA | 2022-02-22 |
| 11112731 | Developer container, developing device, and image forming apparatus | Yoshihiro Fujiwara, Yuki Oshikawa, Yuuki Tsuchiya, Ryusuke Mase, Tsutomu Iwata | 2021-09-07 |
| 11086251 | Image forming apparatus including control circuitry to execute a warm-up operation | Ryusuke Mase, Yoshihiro Fujiwara, Yuki Oshikawa, Yuuki Tsuchiya | 2021-08-10 |
| 10705484 | Developing device, process cartridge, and image forming apparatus | Yuki Oshikawa, Yoshihiro Fujiwara, Ryusuke Mase, Yuuki Tsuchiya | 2020-07-07 |
| 10317814 | Powder supply device and image forming apparatus incorporating same | Nobuo Takami, Tetsuro Hirota, Kenji Kikuchi, Koichi Yamazaki, Atsushi Nakamoto +3 more | 2019-06-11 |
| 10007209 | Developing device and image forming apparatus incorporating same that reduce low-flow regions of toner within the developing device | Shinnosuke Koshizuka, Koichi Yamazaki, Nobuo Takami, Atsushi Nakamoto, Kazunori Suzuki | 2018-06-26 |
| 9897938 | Developing device and image forming apparatus incorporating same | Shinnosuke Koshizuka, Koichi Yamazaki, Tatsuya Kubo, Atsushi Nakamoto, Nobuo Takami +1 more | 2018-02-20 |
| 9817335 | Powder amount detector, powder supply device, and image forming apparatus incorporating same | Koichi Yamazaki, Nobuo Takami, Atsushi Nakamoto, Shinnosuke Koshizuka, Tatsuya Kubo +4 more | 2017-11-14 |